Improvement in treating coal products to obtain benzole



' waited ste instant (inflict.

J OHN RO\VLEY, OF NO. 77 WELLS STREET, OAMBERVVELL, ASSIGNOR TO THEINDIA DYE COMPANY (LIMITED,) OF LONDON, ENGLAND.

Letters Patent No. 101,048, dated March 22, 1870; patented in England,July 22, 1869.

IMPROVEMENT IN TREATING COAL PRODUCTS TO OBTAIN BENZOLE, 8:0.

the Schedule referred to in these Letters Patent and making part of thesame To all whom it may concern:

bodies in the manner hereinafter described, so as toproduce bonzole orother homologous products.

I take creosote or naphthaline, and wcllsaturate the creosote ornaphthaline with chlorine gas- ,This I then distii, and, alter gettingaway the oil, a. fatty matter comes over, which I employ as hereinafterdcscribed. I I

I take the naphtha obtained by the distillation of gas-tar and treat it'with sulphuric acid, employing from thirty to forty per cent, byweight, of acid with the naphtha. I well agitate the mixture for abouttwo or three days, for the purpose of get-ting away any tar and pitch. Ithen put in the requisite quantity of soda to neutralize the acid, andlot it settle, whereby the naphtha. becomes more purified. I then drawoti the naphtha and put it in a still, to which I add from ten totwenty-five per cent. of the fatty matter obtained from the creosote oruaphthaliue, as above mentioned. I then distil in the usual way, and soI obtain benzole or other homologous products, from which aniline dyescan be made. s

I do not confine myself to obtain the fatty matter by distillation, asit can be obtained by pressing or tiltration. 1, however, preferdistillation.

' Having now described my invention, I wish it to be understood thatWhat I claim as my lll\'6l1l1l0ll,2l.lltl desire to secure by LettersPatent, ,is--

Themanufacture of bcnzole or other homologous products from creosote ornaphthaline, in the manner substantially set forth herein.

JOHN ROIVLEY.

Witnesses:

J. H. RICHARDSON, l1 Poultry, City of (Luouas ELsox. London, England.

